单选题
In the figure above, M, N and P are midpoints of the sides of an equilateral triangle whose perimeter is 18. What is the perimeter of the shaded region?
A. 2 B. 3 C.
In the figure above, M, N and P are midpoints of the sides of an equilateral triangle whose perimeter is 18. What is the perimeter of the shaded region?
A. 2 B. 3 C.
【正确答案】
E
【答案解析】